However, Microsoft Outlook for Windows does not support the Outlook for Mac data file (.olm). You need to move data from Mac to Windows PC.Your users need to access OLM files on Outlook for Windows client.This may happen in any of the following situations: When working with Outlook on Mac, you may require to export its data to Windows Outlook PST file format. It also outlines how you can easily and quickly convert Outlook for Mac data file (.olm) to Outlook data file (.pst) by using an OLM converter. Summary: The blog explains the manual process to export Outlook for Mac 2016 to Windows Outlook PST.